                                           }}}
                           {:synsem {:sem {:obj :unspec}}})
 
-                 ;; subject of verbs must have nominative case
+                 ;; subject of verbs must have nominative case: prevents wrong things like article-less noun "casa" being the subject of a sentence.
                  (if-then {:synsem {:cat :verb}}
                           {:synsem {:subcat {:1 {:case :nom}}}})
                  

   [babel.lexiconfn :refer [compile-lex if-then map-function-on-map-vals unify]]
   #?(:clj [clojure.tools.logging :as log])
   #?(:cljs [babel.logjs :as log]) 
   [babel.italiano.morphology :as morph]
   [babel.italiano.pos :refer [adjective agreement-noun cat-of-pronoun
                               common-noun comparative countable-noun determiner
                               drinkable-noun feminine-noun noun intransitive intransitivize


;; see TODOs in lexiconfn/compile-lex (should be more of a pipeline as opposed to a argument-position-sensitive function.
(def lexicon (-> (compile-lex lexicon-source
                              exception-generator 
                              phonize italian-specific-rules)

                 (map-function-on-map-vals
                  (fn [k vals]
